SLLSF93A June   2019  – January 2025 TUSB8042A

PRODUCTION DATA  

1.   1
2. 1 Features
3. 2 Applications
4. 3 Description
5. 4 Device Variants
   1. 4.1 Device Version Comparison
6. 5 Pin Configuration and Functions
7. 6 Specifications
   1. 6.1 Absolute Maximum Ratings
   2. 6.2 ESD Ratings
   3. 6.3 Recommended Operating Conditions
   4. 6.4 Thermal Information
   5. 6.5 Electrical Characteristics
   6. 6.6 Timing Requirements
   7. 6.7 Timing Diagrams
8. 7 Detailed Description
   1. 7.1 Overview
   2. 7.2 Functional Block Diagram
   3. 7.3 Feature Description
      1. 7.3.1 Battery Charging Features
      2. 7.3.2 USB Power Management
      3. 7.3.3 One-Time Programmable (OTP) Configuration
      4. 7.3.4 Clock Generation
      5. 7.3.5 Crystal Requirements
      6. 7.3.6 Input Clock Requirements
      7. 7.3.7 Power-Up and Reset
   4. 7.4 Device Functional Modes
      1. 7.4.1 External Configuration Interface
      2. 7.4.2 I2C EEPROM Operation
      3. 7.4.3 Port Configuration
      4. 7.4.4 SMBus Target Operation
9. 8 Register Maps
   1. 8.1  Configuration Registers
   2. 8.2  ROM Signature Register
   3. 8.3  Vendor ID LSB Register
   4. 8.4  Vendor ID MSB Register
   5. 8.5  Product ID LSB Register
   6. 8.6  Product ID MSB Register
   7. 8.7  Device Configuration Register
   8. 8.8  Battery Charging Support Register
   9. 8.9  Device Removable Configuration Register
   10. 8.10 Port Used Configuration Register
   11. 8.11 Device Configuration Register 2
   12. 8.12 USB 2.0 Port Polarity Control Register
   13. 8.13 UUID Registers
   14. 8.14 Language ID LSB Register
   15. 8.15 Language ID MSB Register
   16. 8.16 Serial Number String Length Register
   17. 8.17 Manufacturer String Length Register
   18. 8.18 Product String Length Register
   19. 8.19 Device Configuration Register 3
   20. 8.20 USB 2.0 Only Port Register
   21. 8.21 Serial Number String Registers
   22. 8.22 Manufacturer String Registers
   23. 8.23 Product String Registers
   24. 8.24 Additional Feature Configuration Register
   25. 8.25 SMBus Device Status and Command Register
10. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
       1. 9.2.1 Discrete USB Hub Product
          1. 9.2.1.1 Design Requirements
          2. 9.2.1.2 Detailed Design Procedure
             1. 9.2.1.2.1 Upstream Port Implementation
             2. 9.2.1.2.2 Downstream Port 1 Implementation
             3. 9.2.1.2.3 Downstream Port 2 Implementation
             4. 9.2.1.2.4 Downstream Port 3 Implementation
             5. 9.2.1.2.5 Downstream Port 4 Implementation
             6. 9.2.1.2.6 VBUS Power Switch Implementation
             7. 9.2.1.2.7 Clock, Reset, and Misc
             8. 9.2.1.2.8 TUSB8042A Power Implementation
          3. 9.2.1.3 Application Curves
    3. 9.3 Power Supply Recommendations
       1. 9.3.1 TUSB8042A Power Supply
       2. 9.3.2 Downstream Port Power
       3. 9.3.3 Ground
    4. 9.4 Layout
       1. 9.4.1 Layout Guidelines
          1. 9.4.1.1 Placement
          2. 9.4.1.2 Package Specific
          3. 9.4.1.3 Differential Pairs
       2. 9.4.2 Layout Examples
          1. 9.4.2.1 Upstream Port
          2. 9.4.2.2 Downstream Port
11. 10Device and Documentation Support
    1. 10.1 Documentation Support
       1. 10.1.1 Related Documentation
    2. 10.2 Receiving Notification of Documentation Updates
    3. 10.3 Support Resources
    4. 10.4 Trademarks
    5. 10.5 Electrostatic Discharge Caution
    6. 10.6 Glossary
12. 11Revision History
13. 12Mechanical, Packaging, and Orderable Information